当集输管道泄漏或穿孔尺寸比较小时，往往采用现场补焊的方法进行抢修。
In the case of small leakage or small size perforation of gathering pipeline, field patching approach is often adopted in doing rush repair.
因此，(根据管道系统的计数和表面积)准确了解下降到最顶层穿孔的体积。
Therefore, the volume down to the topmost perforation must be accurately known (from the tally and surface volume of pipework).
最终将微穿孔板消声器安装到新舟60飞机APU的排气管道上在飞机场进行现场测试，得到了满意的降噪结果。
At last, the test for the MA60 APU noise with the micro perforated absorber is present in this paper.
埋地钢质管道在防腐层、阴极防腐的共同保护下，钢管的某些区域仍会被腐蚀穿孔。
With joint protections of coating and cathode, the buried steel pipeline will still be corroded and penetraded on some pipe surfaces.
阿赛输油管道投产几年来多次发生腐蚀穿孔事故，对管道安全运行构成很大威胁。
Many accidents caused by corrosion have been occurred in Arshai oil pipeline since its production, which brought serious threatens to pipeline's safety operation.
部分长输管道工艺站场埋地管线的腐蚀穿孔，已对管道的安全生产运行构成较大威胁。
Corrosive perforations of underground pipelines in part of long-distance pipeline stations have already made large threat to safety production operation of pipeline.
阐述了阿拉斯加管道腐蚀产生的原因，提出了为避免管道因腐蚀而穿孔，应加强管道内检测的措施；
The reason why corrosion was seen on the Alaska Pipeline; internal inspection should be strengthened to avoid corrosion pitting.
该产品对管道或电线电缆贯穿孔洞，尤其是较大的孔洞、楼层间孔洞的封堵效果较好。
The product of the pipe or wire and cable through the holes, especially the larger holes, plugging holes between floors is better.
该产品对管道或电线电缆贯穿孔洞，尤其是较大的孔洞、楼层间孔洞的封堵效果较好。
The product of the pipe or wire and cable through the holes, especially the larger holes, plugging holes between floors is better.
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